Access Node V2X Message Processing via Dual Protocol Stack
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Solution Overview
Problem
Current mobile communication networks face challenges in efficiently processing vehicular communication messages, particularly due to the different radio interfaces used by cellular and sidelink communication protocols, which hinders the detection and transmission of vehicle-to-everything (V2X) messages between vehicular terminal devices and application servers.
Innovation Solution
The implementation of a dual protocol stack architecture in access nodes, where both cellular and sidelink communication protocol stacks define a radio interface, allowing the extraction of V2X messages from the sidelink protocol stack, addition of a new Internet Protocol header with the application server's address, and transmission of the payload to the server, enabling seamless communication between vehicular terminal devices and application servers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a dual protocol stack architecture is implemented in access nodes to enable V2X message processing, then the capability to detect and transmit V2X messages is improved, but the device complexity increases due to supporting both cellular and sidelink communication protocol stacks
Solution Approach 1:
The patent segments the protocol stack functionality by introducing a specific module within the access node that handles sidelink protocol processing separately from the cellular protocol processing. This modular approach allows V2X message detection and extraction without requiring the entire access node architecture to be redesigned, thus managing complexity while enabling new functionality.
Solution Approach 2:
The access node is enhanced with multi-functionality to handle both traditional cellular communications and V2X sidelink communications through a unified architecture. The same access node infrastructure processes both types of traffic, reducing the need for separate dedicated devices and capturing the essence of universal design.
2Reliability
If dedicated capturing devices are deployed to detect V2X messages, then the reliability of message detection is improved, but the operational complexity and expenses increase
Solution Approach 1:
The access node performs V2X message detection and extraction autonomously using its existing infrastructure and resources. By utilizing the sidelink protocol stack already present in the access node, the system eliminates the need for separate dedicated capturing devices, as the access node serves itself for V2X message processing.
Solution Approach 2:
The access node is designed to perform multiple functions including both traditional cellular base station operations and V2X message detection. This multi-functional approach eliminates the need for separate dedicated capturing devices, reducing deployment complexity while maintaining detection reliability through the unified processing architecture.
3Adaptability or versatility
If V2X messages are transmitted through the cellular protocol stack, then the network integration is improved, but the message transmission efficiency deteriorates due to interface differences between cellular and sidelink protocols
Solution Approach 1:
The patent introduces an intermediary conversion mechanism within the access node that translates sidelink protocol messages into cellular protocol formats for network transmission. This intermediary layer handles the interface differences between protocols, enabling seamless integration while maintaining message integrity and transmission efficiency through automated format conversion.
Data Source
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AI summary
There is provided a solution for handling vehicle-to-everything messages in an access node of a cellular communication system. According to an aspect, a method comprises: processing, by the access node, cellular access messages according to a cellular communication protocol stack and delivering, by the access node, the cellular access messages between a terminal device and a core network of the cellular communication system; and processing, by the access node, vehicle-to-everything messages according to a sidelink communication protocol stack of vehicle-to-everything communications and delivering, by the access node, the vehicle-to-everything messages between at least one vehicular terminal device and an application server.